[ndm000]

At first I thought “all the female words must be in some other language”.

[TulliusCicero]

It does seem like the female words are more obviously foreign (specifically French) whereas the male words tend towards being more technical.

[djur]

I'm seeing Greek, Latin, Japanese, German, and Danish just skimming the "male words", and plenty of the "female words" have been used in English for ages. I think that's more a familiarity effect.

[rjvs]

The female words are technical too, just in a different field to the one you are in.